JP3107067B2 - Electric hot water storage container with vacuum double container - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electric hot water storage container having a vacuum double container, and is used, for example, for a household electric pot.

[0002]

2. Description of the Related Art At present, resource saving and energy saving are required in various fields. The same is true for household electrical appliances that have been used all the time. There is an urgent need for electric pots and the like using heaters with a large energizing load.

Therefore, an electric pot using a vacuum double container made of metal has been realized. As a result, energy saving can be achieved as much as the heat insulation by the vacuum space of the vacuum double container is improved.

[0004]

However, an electric hot water storage container having a vacuum double container has a bottom portion heated by a heater so that the content liquid can be easily and efficiently heated from the outside of the vacuum double container. There is a problem that the range in which a vacuum space cannot be formed is relatively wide, such as a single bottom portion in which a vacuum space is not formed in the entire region, and there is a problem that it is not possible to make full use of the vacuum double container structure having an angle.

SUMMARY OF THE INVENTION An object of the present invention is to provide an electric hot water storage container having a vacuum double container which can form a vacuum space in many areas with an increase in the number of container walls as the number of walls of the container increases and which improves thermal efficiency. .

[0006]

Means for Solving the Problems To achieve the above object, an electric hot water storage container having a vacuum double container according to the present invention comprises:
The inner cylinder and the outer cylinder were formed by fitting a metal inner container for storing the content liquid into the inner cylinder of a vacuum double container in which the mouth, body, and bottom were formed in a continuous vacuum space. A triple hot water storage unit, an exterior body containing the triple hot water storage unit, and a vacuum double container that extends from the bottom of the inner container to extend between the hot water storage unit and the external body, and the external body and the vacuum double A discharge path for discharging the content liquid to the outside by an electric pump provided between the container and the inner surface of the inner container which is located between the inner container and the vacuum double container and is applied to the outer surface of the bottom of the inner container. A heater for heating the content liquid;
A control circuit provided between the exterior body and the vacuum double container,
In one feature, the heater, the control circuit, and the electric pump are separated from each other by a vacuum double container.

[0007] By such a combination of the vacuum double container and the inner container, a single structure with the inner container is formed in the vacuum double container by the heater provided in the bottom of the vacuum double container. In the case of a single bottom that has been used in the same manner, heating can be performed with high thermal efficiency, and as a heat retaining structure, a container wall is further formed inside a vacuum double container surrounding the content liquid, and this container wall and the vacuum double container The triple structure that adds a space between the inside and the outside further enhances the heat insulation between the inside and the outside of the inner container, so that the thermal efficiency is improved by that much and the content liquid is passed through the discharge path by the electric pump regardless of the triple structure. The heating efficiency of the heater can be increased without lowering the heat retention of the content liquid by forming the inner container from an aluminum-based material having good thermal conductivity by improving the heat insulating property. Since it is also possible to improve the et, high energy saving effect can be obtained as a whole. In addition, since the inner container does not have an external appearance, it can be formed of an inexpensive material such as an iron-based material. In the case where a hot water storage surface is subjected to fluororesin processing involving firing at a high temperature of about 400 ° C., the processing target is vacuum double Since it is on the inner container side instead of the container side, the sealing process in a vacuum state in which the space between the inner and outer cylinders is evacuated can be performed at a low cost with a vitreous material having a low melting point. In particular, since the heater is located between the inner container and the vacuum double container, and the control circuit and the electric pump are located between the outer package and the vacuum double container, the control circuit, the electric pump and the heater Are separated by a vacuum double container.

[0008] The electric hot water storage container having the vacuum double container of the present invention further comprises a vacuum double container having an inner tube and an outer tube formed in a continuous vacuum space having a mouth, a body, and a bottom. A triple inner water container comprising: a metal inner container which is fitted so as to be attachable / detachable to and from the inner cylinder of the double container and stores the hot liquid;
The outer body containing the triple hot water storage unit and the content liquid in the inner container extending from the inner cylinder of the vacuum double container to the space between the hot water storage unit and the outer body and fitted into the vacuum double container by an electric pump. A discharge path for discharging to the outside, a heater provided at the bottom of the vacuum double container, for heating the content liquid in the inner container fitted into the inner cylinder, and a heater provided at the bottom of the inner container, the inner container being evacuated. An outlet connected to the opening of the discharge path into the inner tube of the vacuum double container when fitted in the inner tube of the double container, and an inner container provided at the outlet, the inner container of the vacuum double container Another feature is that the valve includes a valve that opens when fitted in the inner cylinder and closes when floating from the fitted position.

Thus, in the hot water storage unit having the triple structure of the vacuum double container and the inner container, the above-described electric discharge and the heating of the content liquid in the inner container by the heater can be performed. In addition, the inner container can be attached and detached, and has an outlet with a check valve at the bottom for discharging the contents liquid, and the inner container is fitted into the inner cylinder of the vacuum double container to check it. When the valve is opened and connected to the discharge path to discharge the contents, the check valve closes when the inner container is removed from the vacuum double container, so that the contents in the inner container may leak. However, the inner container can be attached and detached with a configuration having an electric pump on the vacuum double container side.

[0010] Further objects and features of the present invention will become apparent from the following detailed description and drawings. Each feature of the present invention can be used alone or in combination in various combinations as far as possible.

[0011]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Some embodiments of the present invention will be described below with reference to FIGS.

The embodiment shown in FIGS. 1 to 5 is a triple hot water storage unit 5 in which a metal inner container 4 is fitted into a vacuum double container 3 composed of an inner tube 1 and an outer tube 2. And a heater 6 that is provided inside the vacuum double container 3 and heats the content liquid in the inner container 4 to boil the water and keep the temperature warm, and further includes an inner container as necessary. A discharge path 7 connected to the outside 4 for guiding the content liquid to the outside and a discharge pump 8 for discharging the content liquid to the outside through the discharge path 7 are provided, and a vacuum space 9 is provided between the inner and outer cylinders 1 and 2. . Although the inner and outer cylinders 1 and 2 are made of stainless steel having low thermal conductivity in the embodiment shown in the figure, other metal materials may be used. In some cases, a spacer between the inner and outer cylinders 1 and 2 is provided in the vacuum space 9. It may be made of a synthetic resin having the provided pressure resistance structure.

[0013] By the combination of the vacuum double container 3 and the inner container 4, the liquid in the inner container 4 is formed into a single structure by the heater 6 provided in the bottom of the vacuum double container 3. In the case of the single bottom formed in the vacuum double container 3, it can be used in a similar manner to efficiently heat it, and as a heat retaining structure, the inside of the vacuum double container 3 surrounding the content liquid in the vacuum space 9 is further provided with a container wall. Since the space 11 between the container wall and the vacuum double container 3 further enhances the heat insulation between the inside and the outside of the inner container 4, the thermal efficiency is improved accordingly. In addition, by forming the inner container 4 from an aluminum-based material having good thermal conductivity by improving the heat insulating property, the heating efficiency of the heater 6 can be further improved without lowering the heat retention of the content liquid. Therefore, a high energy saving effect can be obtained as a whole. Since the inner container 4 is not visible, the inner container 4 can be formed of an inexpensive material such as an iron-based material. In a case where the hot water storage surface is to be subjected to fluororesin processing involving firing at a high temperature of about 400 ° C., the processing target is a vacuum double container Since the inner container 4 is located on the side of the inner container 4 instead of the side 3, the sealing process in a evacuated state in which the inner and outer cylinders 1 and 2 are evacuated can be performed at low cost with a vitreous material having a low melting point. Moreover, the content liquid stored in the inner container of the hot water container 5 can be discharged to the outside through the discharge path 7 by operating the discharge pump 8 regardless of the triple structure of the hot water container 5. There is no inconvenience in using the contents liquid.

The heater 6 includes a water heater mainly used for water heating and a heat retaining heater mainly used for heat retention.
It is preferred to use streets. However, the present invention is not limited to this, and by adjusting the energization duty ratio of one heater, it is possible to obtain a heating capacity suitable for water heating and heat retention. In any case, the heater 6 is applied to the outer surface of the bottom of the inner container 4, the bottom and the shoulder of the water storage container 5 are covered with a bottom member 12 and a shoulder member 13 made of synthetic resin, and the trunk is also covered with the outer body 14. The shoulder member 13 is provided with a lid 17 for opening and closing the opening 15 of the inner container 4 and the body opening 16 of the shoulder member 13 following the opening 15. Bottom member 1
2 and the exterior body 14 are made of synthetic resin and are integrally formed. However, this can be formed separately. In the case of a separate body, the exterior body 14 having a simple structure is constituted by a metal cylinder. Can be.

As described above, since the heater 6 is applied to the bottom outer surface of the inner container 4, the positional relationship with the inner container 4 is stabilized, and especially, it is difficult for the heater 6 to float in a close contact state. The efficiency of heating the content liquid through the inner container is improved. Further, a bottom member 12 and a shoulder member 13 made of synthetic resin are attached to the bottom and the shoulder of the triple water storage unit 5,
At the same time as covering the complex shape and structure to improve the appearance,
In addition to the case where the body of the triple hot water storage device body 5 is exposed, the vacuum double container 3 is provided while covering and protecting the equipment and easily securing a complicated structure for attaching the lid. Since the entire outer periphery of the triple water storage unit 5 in which the inner container 4 is combined with the inner container 4 is covered with the cover 17, an external appearance structure that is not affected by the shape and structure of the water storage unit is obtained, so that the degree of freedom in external design is high. . In particular, the exterior body 14 and the exterior body 1
The presence of the space 18 between the vacuum container 4 and the vacuum double container 3 increases the container wall surrounding the inner container 4 and the resulting gap, thereby further increasing the heat insulating property and the thermal efficiency. However, if it is not necessary to particularly increase the heat retaining property, the body of the hot water storage unit 5 can be exposed to the outside to simplify the structure.

The discharge passage 7 is drawn out of the vacuum double container 3 through an opening 25 formed at the bottom of the vacuum double container 3, rises outside the vacuum double container 3, and the discharge port 7a faces downward to the outside. The discharge pump 8 is an electric pump provided in the middle of the discharge passage 7 near the bottom of the inner container 4. As a result, the discharge path 7 is drawn out to the outside through the small opening 25 of the vacuum double container 3 without particularly narrowing the vacuum space 9 of the vacuum double container 3, and the conventional electric discharge pump 8 such as a centrifugal pump is conventionally used. The liquid content can be automatically discharged by using the liquid.

In the embodiment shown in FIG. 1, the lead wires 22 to 24 of the electric equipment such as the temperature sensor 19 including the heater 6 applied to the inner container 4 and the temperature fuse 21 are connected to the vacuum double container 3.
Is drawn out of the vacuum double container 3 through an opening 26 different from the opening 25 of the discharge passage 7 at the bottom of the discharge passage 7. Since the space 9 is not particularly narrowed, the effect of keeping the content liquid in the inner container 4 by the vacuum space 9 of the vacuum double container 3 is high. However, as in the embodiment shown in FIG. 4, each of the discharge path 7 and the lead wires 22 to 24 can be drawn out through one opening 25, whereby the vacuum space 9 of the vacuum double container 3 is further expanded to improve the performance. Can be even higher.

The inner container 4 has the shoulder member 1 as in the embodiment of FIG.
3 can be integrated with the vacuum double container 3 by screwing with the screw 27 or direct screwing, or by at least one of welding, brazing, caulking, bonding, and forced fitting. In order to assemble the container, there is an advantage that the container can be handled as a single component, that is, the hot water storage container body 5. In screwing, the inner container 4 is separated from the vacuum double container 3 as necessary by unscrewing the screw 27, and the Heavy container 3
This is convenient for maintenance such as replacement of equipment such as the heater 6, the temperature sensor 19, and the temperature fuse 21 between the inner container 4 and the inner container 4.

Here, the embodiment shown in FIGS. 1 to 3 will be described in detail. As shown in FIG. 2 (a), the vacuum double container 3 has an outer cylinder 2 having a straight body, a slightly upward stepped portion 1a, and an outer portion for forcibly fitting the inner container 4 immediately below the stepped portion 1a. In a state where the inner cylinder 1 having a substantially straight body portion having the engagement concave portion 1b which is annularly recessed is fitted to the inner and outer cylinders 1,
2 outer flanges 1c and 2c are overlapped with each other, and the outer peripheral portions are separated by TI.
It is integrated by welding and joining by G welding or the like so that there is no vacuum leakage. However, instead of welding, brazing or airtight bonding can be used. Openings 25 and 26 are inner cylinder 1
The slightly long outwardly extending cylindrical portions 1d and 1e projecting out of the bottom of the outer cylinder 2 formed by drawing on the bottom of the outer cylinder 2 are fitted into the extremely short cylindrical portions 2d and 2e formed by drawing on the bottom of the outer cylinder 2 in a double pipe structure. At the same time, both ends are welded and joined together to prevent vacuum leakage. However, this welding can be replaced with brazing or airtight bonding.

On the other hand, as shown in FIG. 2B, the inner container 4 has a narrow opening 15 formed by drawing in the upper part of a straight body, and the engaging recess of the inner cylinder 1 is provided immediately below the opening. An engagement projection 4b is formed on the outer side of the engagement projection 4b and elastically engages with the engagement projection 4b. The protrusion 4b and the recess 1b of the inner cylinder 1 are also integrated by forcible fitting. Therefore, the inner container 4 need not be integrated with the screw 27, and the inner container 4 can be forcibly detached from the vacuum double container 3 and separated by this degree of forcible fitting.
The convenience of maintenance is not impaired. A recess 4a is formed at the bottom of the inner container 4 to which the heater 6 is fitted from below, and a temperature sensor 19 is applied to the center of the ceiling wall of the recess 4a from below. A depressed recess 4d is formed. In addition, inner container 4
The outer peripheral portion of the concave portion 4a at the bottom is provided with a cylindrical portion 4e which is formed to be drawn in a very short inward direction.
Is fitted.

A metal fitting 29 is attached to the outer periphery of the concave portion 4a at the bottom of the inner container 4 by welding, brazing, or bonding. A metal heat shield plate 31 such as a steel plate is attached to the metal fitting 29 with screws 32.
The heater 6 is pressed to the bottom of the inner container 4 by a spring plate 33 and a holding plate 34 sandwiched between the inner container 1 and the heater 6, so that the heat of the heater 6 is efficiently transmitted to the inner container 4 without a gap. I have to. In addition, this allows the inner container 4
Can be treated as one part together with the heater 6 to assemble the electric hot water storage container.

In the vacuum double container 3, a seal packing 35 fitted on the outer periphery of the outer flanges 1c, 2c is placed on an upward step 13a formed by the shoulder member 13 below the body opening 16. . The inner container 4 fitted to the vacuum double container 3 has the outer flange 4c placed on the seal packing 35 of the vacuum double container 3 and protrudes outward from the inner container 4 by means of the shoulder member 13 by the screw 27. One more upward step 13
b screwed onto the vacuum double container 3 and the shoulder member 1
3 is integrated. The screws 27 can be screwed to the vacuum double container 3 to be integrated.

The cover member 17 is mounted on the synthetic resin shoulder member 13 so that the lid 17 can be opened and closed by a hinge pin 42 on the rear bearing portion 41. When the inward opening is opened by the downward movement of the stopper 43, the bearing portion 41 allows the hinge pin 42 to enter and exit at an opening degree at which the fitting between the lid 17 and the body opening 16 is released. Can be attached and detached. The lid 17 is provided with the body opening 16.
And an inner lid 45 for opening and closing the opening 15 of the vacuum double container 3. The inner cylinder 1 is disposed between the upper lid 44 and the inner lid 45 attached thereto from below with a fitting screw 55. A steam passage 46 for letting out the inside steam to the outside is formed. In the steam passage 46, an opening 46 a into the inner cylinder 1 is provided in the inner lid 45, and an opening 46 b to the outside is provided on the outer surface of the upper lid 44. In the middle of the steam passage 46, the electric hot water storage container is temporarily rolled over so that the content liquid tends to flow out through the steam passage 46 to the outside, or is temporarily bypassed and the opening 46 b is bypassed.
A reservoir 46c is provided to delay the arrival of the electric hot water storage container until the content liquid reaches the opening 46b.

The steam passage 46 is provided with a water stop valve 47 for closing the steam passage 46 when necessary, which closes the steam passage 46 when the electric hot water storage container rolls over. In the embodiment shown in FIG.
It is provided immediately inside 6a. When the lid 17 is closed, the front portion of the lid 17
There is provided a lock member 49 for locking the lock in a closed state. The lock member 49 is urged by a spring 51 so as to always maintain the engagement position for automatically performing the lock. An unlocking member 52 is also provided to unlock the lock by the lock member 49. The lock release member 52 is attached to the lid 17 so as to be rotatable by a shaft 52c, and the lock member 49 is retracted against the spring 51 by a counterclockwise rotation when the front end 52a is pushed down by a finger of a hand. Thus, the unlocked lid 17 can be lifted and opened by lifting the rear end 52b with another finger.

A heat insulating portion containing a heat insulating material 53 is provided above the vapor passage 46 in the upper lid 44 of the lid 17, and the vacuum space 9 is formed by a throttle structure of the opening 15 formed by the inner cylinder of the vacuum double container 3. Combined with the inward protrusion, the heat of the content liquid is prevented from escaping to the upper portion through the opening 15 and the body opening 16, so that the thermal efficiency is further increased. However, the opening 1 formed by the inner cylinder 1 with the inner lid 45 having a heat insulating structure.
It is convenient to close the portion 5 directly with the heat insulating portion of the lid 17 in order to prevent escape of heat upward. In this case, a heat insulation structure in which the inner lid 45 has a metal vacuum double structure can be used.

The seal lip 54a of the seal packing 54, which is fitted to the outer periphery of the inner cover 45 and sandwiched between the upper cover 44, is pressed against the edge of the opening 15 formed by the inner cylinder 1 so that the opening 15 and the inner cover 45 It prevents steam and heat from escaping to the outside. The heater 6 has a donut shape, and a temperature sensor 19 is applied to the center of the bottom of the inner cylinder 1 through an opening at the center. The thermal fuse 21 is a heat shield plate 31
Is held by a bracket 56 attached to the
When the temperature around the heater 6 rises abnormally, the heater 6
The power supply to is cut off.

The discharge passage 7 is connected to the connection pipe 28 of the inner container 4.
Is connected to a suction port of a discharge pump 8 installed below the bottom of the vacuum double container 3 through a synthetic resin joint 61, and a rising portion is connected to the discharge port of the discharge pump 8 through a synthetic resin joint 62. A liquid amount display tube 63 made of transparent or anti-transparent glass or resin is formed and connected. The upper end of the liquid amount display tube 63 has an inverted U-shape in a forwardly protruding portion 13c of the shoulder member 13. It is connected to the lower part of the water stop valve 65 when the unit 64 is located overturned. The unit 64 extends to the distal end of the projection 13c, and exposes the discharge port 7a to the outside from the bottom opening 66a of the synthetic resin pipe cover 66 applied to the projection 13c from below. The liquid amount display tube 63 is provided with a liquid amount display window 67 provided on one side of the front part of the exterior body 14.
The liquid amount is displayed in such a manner that the liquid level in the inner container 4 in the liquid amount display tube 63 can be visually recognized from the outside.

An operation panel 68 is provided on the upper surface of the protrusion 13c of the shoulder member 13, and an operation board 69 is provided inside the operation panel 68. The operation board 69 includes a switch group operated by various key operations on the operation panel 68, a display lamp for displaying a set operation mode and operation state, a buzzer for warning, and the like, and is built in the bottom member 12. A signal is transmitted to and received from the control board 71.

The control board 71 is accommodated in a downwardly facing circuit box 72 integrally formed at the edge of the central opening of the bottom member 12. A lid may be provided at the opening of the circuit box 72. The control board 71 includes a heater 6 and a discharge pump 8.
Is mounted with a control circuit 73 for controlling the operation in accordance with the operation on the operation panel 68. A bottom cover 74 is attached to the central opening of the bottom member 12 by fitting a part of the fitting from below and screwing a part of the fitting. A rotating seat 75 is rotatably fitted to the outer peripheral portion of the bottom lid 74 so that when the electric hot water container is fixed, the entire electric hot water container rotates on the rotating seat 75 and can change its direction. .

A power supply connection port 76 is provided on the outer peripheral surface of the bottom member 12 so that it can be connected to a power supply. From the power supply connection port 76, the heater 6, the operation board 69, and the control board 71
A rechargeable battery 77 is provided in the power supply circuit to the power supply. Thereby, when the power is connected to the power supply connection port 76, the secondary battery 77 is also supplied with power and charged, and when the power is not connected, the secondary battery 77 is supplied with power to necessary parts and used as usual. Alternatively, only the discharge pump 8 is driven so that the content liquid can be automatically discharged.
It is convenient for the power supply connection port 76 to be able to connect a connection cord 80 from a cigarette socket of a car 79 in addition to a connection cord 78 for a home power supply. Also, FIG. 3 shows how to charge a secondary battery by supplying power from a household power supply.
It is also convenient to use a charging adapter 81 having a connection part between the home power supply and the power supply connection port 76 as shown in FIG.

In the embodiment shown in FIG. 5, when the vacuum double container 3 and the inner container 4 are forcibly fitted, in addition to the engaging concave portions 1b and the engaging convex portions 4b, the inner cylindrical portion 1 is formed in an annular shape inside the lower part. A forcible fitting portion of the protruding engaging convex portion 1b1 and the engaging concave portion 4b1 concaved annularly inward at the lower portion of the inner container 4 is further provided,
The degree of integration between the inner cylinder 1 and the inner container 4 by forcible fitting is increased.

Further, the upper lid 44 of the lid 17 is
The inner cover 1 is formed into a shape that can enter into the opening 15 formed by the inner cylinder 1 together with the inner cover 45, and a heat insulating material 53 is built in a portion of the upper cover 44 that enters the opening 15, and the opening 15 is closed with a heat insulating structure. This makes it easier to suppress the escape of heat to the upper portion through the opening 15. The lock release member 52 is rotated by lifting the rear end portion 52b by hand, so that the lock member 4 is rotated.
9 and the unlocking member 52
The lid 17 can be opened by pulling up. In addition, the vacuum double container 3 has a connecting member 91 attached to the bottom thereof by welding, brazing, or bonding.
Are connected to each other by a screw 92. By this connection, each of the vacuum double container 3, the bottom member 12, the shoulder member 13, and the exterior body 14 is integrally connected so that only the inner container 4 can be easily removed. . However, it is preferable that such an integrated connection structure is also applied to the embodiment of FIG.

The other structure is not particularly different from that of the embodiment shown in FIG. 1, and the same members are denoted by the same reference numerals and overlapping description will be omitted.

In another embodiment shown in FIGS. 6 to 8, the inner container 4 is in a state where the lid 17 is detached, and the vacuum is integrally formed with the discharge path 7 and the electric discharge pump 8 as shown in FIGS. 7 and 8. The vacuum double container 3 is fitted with some play so that it can be detached from the double container 3 or fitted as shown in FIG. The discharge pump 8 is provided in the bottom of the inner container 4 and an electric motor 10 provided on the vacuum double container 3 side.
1 is driven in a non-contact manner through the magnetic couplings 102 and 103, the discharge path 7 rises from the discharge pump 8 along the outer wall of the inner container 4, and the rear discharge port 7a opens downward to the outside. . However, you may make it stand up along the inner side of the peripheral wall of the inner container 4.

The unit 64 of the discharge path 7 includes a protrusion 13 c of the liquid injection guide 104 provided in the protrusion 13 c of the shoulder member 13.
The discharge port 7a is opened on the upper end receiving port 104a which faces the part of the vessel opening 16 that has entered the pipe opening 66a.
The liquid is injected from the liquid injection port 104b facing the bottom opening 66a of the nozzle. Thus, the unit 64 having the discharge port 7a does not need to enter the protruding portion 13c of the shoulder member 13, so that the inner container 4 is not hindered from being integrally attached to and detached from the discharge path 7.

The body of the outer cylinder 2 of the vacuum double container 3 has a structure that is exposed to the outside, and the structure is simplified by eliminating the need for an exterior body covering the body. The inner container 4 has a shoulder member 111 made of synthetic resin attached to the upper end, and a handle 112 for attachment and detachment is attached to the shoulder member 111 by a shaft 113.
The shaft 3 is fitted into the notch 13d of the shoulder member 13 of the vacuum double container 3 so that the handle 112 can go out and undulate even when the inner container 4 is fitted into the vacuum double container 3. Has become. Accordingly, since the inner container 4 does not come off when the lid 17 is closed, the entire electric hot water storage container can be carried by holding the handle 112. However, it is preferable to provide a lock mechanism between the shoulder members 13 and 111, for example, similar to the case of the lid 17 that locks the inner container 4 in a state of being fitted into the vacuum double container 3 for carrying the whole. A discharge portion cover 114 that covers the discharge path 7 is provided on the shoulder member 111.

As described above, the discharge pump 8 and the discharge path 7
Is the inner container 4 side, and the discharge pump 8 is a magnetic coupling 10 by an electric motor 101 provided on the vacuum double container 3 side.
2 and 103, the inner container 4 is connected to the discharge path 7 and the discharge pump 8 regardless of the driving of the discharge pump 8 by the electric motor 101 on the vacuum double container 3 side.
In the detached state, the inside of the inner container 4 and the inside of the discharge path 7 and the discharge pump 8 have the advantage of being easily washed and rinsed with washing water or water.

The heater 6 is buried in the hot platen 115 and installed in the bottom of the vacuum double container 3. As a result, the heat of the heater 6 can be spread over the entire area of the hot platen 115 and the inner surface 4 can be brought into close contact with the upper surface of the hot platen 115. It is easy to transfer heat to the container 4 side, and even if the inner container 4 is taken out, the heater 6
Since it is not exposed, it is protected from external force due to wiping work from the outside. In addition, each of the lead wires 22 to 24 is led out through a portion of the single bottom 3a where the vacuum space 9 of the vacuum double container 3 is not formed. But,
The heat insulating function is higher than that of the conventional case because an area as large as the single bottom conventionally provided for applying the heater 6 is unnecessary.

The vacuum double container 3 is, as described above,
If a spacer is provided between the inner cylinder 1 and the outer cylinder 2 to withstand external pressure, the spacer can be made of synthetic resin.
If it is made of metal, it can be made thin because the plate thickness can be thin. In particular, since it has a triple structure, it is easier to withstand external pressure and has higher heat insulation than the case where only the vacuum double container 3 is used.
By making the plate thickness thinner than usual, it is possible to reduce the weight, size, and cost.

Since other structures are not particularly different from those of the embodiment shown in FIGS. 1 to 3 and the like, the same members are denoted by the same reference numerals and overlapping description will be omitted.

In the embodiment shown in FIG. 9, the discharge pump 8 is connected to the connection pipe 121 of the discharge path 7 formed in the vacuum double container 3 and the outlet 12 having the check valve 122 on the inner container 4 side.
When the inner container 4 is fitted to the vacuum double container 3, the outlet 123 is fitted watertight through an O-ring 124 into an opening 121 a provided inside the connection pipe 121, and is integrally formed with the joint 61. The check valve 122 is opened by the projected protrusion 61a, so that the content liquid enters the discharge pump 8 and is discharged through the discharge path 7. When the inner container 4 is removed, the check valve 122 takes the outlet 123 instantaneously by the spring 125, so that the contents liquid does not leak.
As a result, the inner container 4 has the discharge pump 8
Can be detached even if it is provided on the side of

[0042]

According to one feature of the electric hot water storage container having the vacuum double container of the present invention, the heater provided in the bottom of the vacuum double container by the combination of the vacuum double container and the inner container. In the same manner as in the case of a single bottom with a single-layer structure formed by an inner container in a vacuum double container, the contents of the inner container can be used to heat efficiently, and as a heat retaining structure, the contents are held in a vacuum double container. A container wall is further formed inside the surrounding liquid, and the triple structure in which the space between the container wall and the vacuum double container is added further enhances the heat insulation between the inside and the outside of the inner container. Regardless of the triple structure, the electric pump can discharge the content liquid to the outside through the discharge path irrespective of the triple structure. By improving the heat insulating property, the inner container is formed of an aluminum-based material having good thermal conductivity. Yo Since it is also possible to further improve the heating efficiency by the heater without degrading warmth of the liquid content, high energy saving effect can be obtained as a whole. In addition, since the inner container does not have an external appearance, it can be formed of an inexpensive material such as an iron-based material. In the case where a hot water storage surface is subjected to fluororesin processing involving firing at a high temperature of about 400 ° C., the processing target is vacuum double Since it is on the inner container side instead of the container side, the sealing process in a vacuum state in which the space between the inner and outer cylinders is evacuated can be performed at a low cost with a vitreous material having a low melting point. In particular,
Since the heater is located between the inner container and the vacuum double container, and the control circuit and the electric pump are located between the outer package and the vacuum double container, the control circuit and the electric pump and the heater are connected to each other. A structure separated by a vacuum double container is obtained.

According to another characteristic of the electric hot water storage container having the vacuum double container according to the present invention, in the water storage container having the triple structure of the vacuum double container and the inner container, the electric discharge and the inner container as described above are used. It is possible to heat the content liquid in the heater by the heater. In addition, the inner container can be attached and detached, and has an outlet with a check valve at the bottom for discharging the contents liquid, and the inner container is fitted into the inner cylinder of the vacuum double container to check it. When the valve is opened and connected to the discharge path to discharge the contents, the check valve closes when the inner container is removed from the vacuum double container, so that the contents in the inner container may leak. However, the inner container can be attached and detached with a configuration having an electric pump on the vacuum double container side.

[Brief description of the drawings]

FIG. 1 shows an electric hot water storage container according to one embodiment of the present invention.
FIG. 4 is a cross-sectional view showing one embodiment.

FIGS. 2A and 2B show a vacuum double container and an inner container of the electric hot water storage container of FIG. 1, wherein FIG.
Is a sectional view of the inner container.

FIG. 3 is an explanatory diagram showing an example of a connection mode of the electric hot water storage container of FIG. 1 with a power supply.

FIG. 4 is a sectional view of a bottom part showing another example of the electric hot water storage container of the one embodiment.

FIG. 5 is a sectional view showing another example of the electric hot water storage container of the one embodiment.

FIG. 6 is a sectional view showing an example of an electric hot water storage container according to another embodiment of the present invention.

FIG. 7 shows a state in which the inner container of the electric hot water storage container of FIG. 6 is being removed.
Or it is sectional drawing which shows the state in the middle of mounting.

8 is a perspective view showing the electric hot water storage container of FIG. 6 in a state where an inner container is removed.

FIG. 9 is a partial cross-sectional view showing another embodiment.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Inner cylinder 1b Concave part 1b1 Convex part 2 Outer cylinder 3 Vacuum double container 4 Inner container 4b Convex part 4b1 Concave part 5 Hot water storage unit 6 Heater 7 Discharge path 8 Discharge pump 9 Vacuum space 12 Bottom member 13 Shoulder member 14 Exterior body 15 Opening 16 Body opening 17 Lid 27 Screw 53 Insulation material 115 Hot plate

──────────────────────────────────────────────────続 き Continued on front page (58) Field surveyed (Int.Cl. ⁷ , DB name) A47J 27/21 A47J 41/02

Claims (2)

(57) [Claims] 1. A metal inner container for storing a hot liquid is fitted into an inner cylinder of a vacuum double container in which a mouth, a body, and a bottom are formed in a continuous vacuum space between an inner cylinder and an outer cylinder. A triple hot water storage unit formed together, an exterior body containing the triple hot water storage unit, and a penetrating vacuum double container extending from the bottom of the inner container to extend between the hot water storage unit and the external body, and A discharge path for discharging the content liquid to the outside by an electric pump provided between the body and the vacuum double container, and a discharge path located between the inner container and the vacuum double container and applied to the outer surface of the bottom of the inner container A heater for heating the content liquid in the inner container, a control circuit provided between the outer casing and the vacuum double container,
An electric hot water container having a vacuum double container, wherein the heater, the control circuit, and the electric pump are separated by a vacuum double container. 2. A vacuum double container having a mouth, a body, and a bottom formed in a continuous vacuum space by an inner cylinder and an outer cylinder, and are fitted so as to be detachable from an inner cylinder of the vacuum double container. A triple inner water storage container composed of a metal inner container for storing the hot liquid, an outer body containing the triple inner water storage body, and a space between the inner body of the vacuum double container and the outer storage body Extends to
A discharge path for discharging the content liquid in the inner container fitted to the vacuum double container to the outside by an electric pump, and a content passage in the inner container provided at the bottom of the vacuum double container and fitted in the inner cylinder. A heater for heating, and an outlet provided at the bottom of the inner container and connected to an opening of the discharge passage into the inner cylinder of the vacuum double container when the inner container is fitted into the inner cylinder of the vacuum double container. And a valve provided at the outlet, which opens when the inner container is fitted into the inner cylinder of the vacuum double container, and closes when the inner container floats from the fitted position. Electric hot water container with double container.